Collection company WTF?

Collection company WTF?

Today I got a letter for a collection compay with the usual blah blah. The bill itself is about 5 years old, but I think this is the first I've heard from this agency about it. The back story being, its a doctor bill for my son. My old insurance had a $25 co pay, but the office coded the visits as out patient surgery. After trying to logically deal with them, even getting a rep from both insurance and office on the phone, where the insurance told them just to refile under the correct code, and the doc's office refused to do it(wtf?) I told the doctors billing dept. to go to hell. I technically owe the doctor $75, but due to their crainorectal inversion, they are billing me for $565. I'd like my credit to get better, but I'm afraid to call these people, lest it restart the famous 7 year clock. Any advice?
Aerogardening in the cold of winter

Aerogardening in the cold of winter

Lobivia dobeana

Lobivia dobeana

Plant ID

Plant ID

My room!

My room!

what in the world…?

what in the world…?

Out in the Garden

Out in the Garden